Best King Mattress Cover With Zipper: 5 Top Picks Compared

Choosing a king mattress cover with a zipper comes down to a few practical questions: how deep your mattress is, how much protection you need from spills, dust mites, or bed bugs, and whether you want a quiet, soft surface that still feels like your bed. A full zippered encasement wraps the mattress on all sides, so it guards against more than a fitted protector does. The catch is that a cover that fits poorly, traps heat, or is hard to wash can quickly become a nuisance. This guide compares five popular options so you can match the right cover to your mattress and your household.

Quick Comparison Table

Our Picks: Best King Mattress Cover With Zipper reviews

Utopia Bedding Zippered Encasement: Best All-Around Full Coverage

This is a full zippered encasement built for a king mattress measuring 78 by 80 inches. Its listing gives a depth fit of up to 15 inches, and the cover wraps all four sides and the top and bottom of the mattress. That 360-degree design is the main reason it earns a spot at the top of this list. Partial protectors leave edges exposed, while this one encloses the whole sleep surface.

The knitted polyester fabric is smooth and stretchy, which helps it go on without bunching. The listing emphasizes a non-crinkling design, and that matters more than many shoppers expect. Covers that rustle with every turn can disrupt sleep for two people, and this one is built to stay quiet. The waterproof layer is meant to stop spills, sweat, and everyday accidents from reaching the mattress, which makes it a sensible choice for homes with children or pets.

In everyday use, the biggest factor is the installation. Because the cover is fully encased, you need to work the mattress into it carefully and keep the zipper aligned. Some users report that the first setup takes patience, especially on a thicker mattress near the upper depth limit. Once it is on, many owners appreciate that it stays in place rather than sliding off the corners. Care is simple: machine wash, then tumble dry on low heat.

Compared with the other options here, this cover is a strong pick for buyers who want complete encasement at a reasonable depth. It does not reach the depth of the SureGuard option, and its fabric is less plush than the terry and bamboo choices. But for general protection against liquids, dust mites, and bed bugs, it covers the most ground in a practical, low-fuss way.

Pros:

• Full 360-degree encasement that covers the top, bottom, and all sides
• Non-crinkling knitted polyester that stays quiet during movement
• Stated 100% waterproof barrier suited to spills and pet or child accidents
• Simple machine washing and low-heat drying

Cons:

• Setting up a fully encased cover can take patience, especially on thicker mattresses

Verdict: If you want a complete, quiet, waterproof encasement for a king mattress up to 15 inches deep, this is one of the most dependable choices in this group. It suits most households well, especially those focused on bed bug and dust mite protection.

DreamField Linen Bamboo Cooling Cover: Best for a Soft, Breathable Surface

This zippered cover is sized at 78 by 80 inches and is built around a bamboo and polyester jacquard fabric. The zipper runs around the entire mattress so the top and bottom are both protected. The listing describes the surface as soft and smooth, and it is marketed as noiseless, with no crinkling when you shift position. For shoppers who care most about how a bed feels against the skin, the material is the main draw.

The listing also makes cooling claims, stating that the bamboo material helps distribute heat evenly and regulate body temperature. These are manufacturer statements, and results will vary with your bedroom climate, your sleeping habits, and the bedding you layer on top. Treat the cooling feature as a possible benefit rather than a guarantee. The waterproof function is also present, which covers spills, sweat, and accidents, so it is useful for households that need a barrier as well as a comfortable surface.

Day-to-day use leans toward comfort, but the care routine is more demanding than some alternatives. The listing calls for cold, gentle washing, low-heat drying, no bleach, and no dry cleaning. Many owners find the softness worth that extra attention, though some may prefer a cover that is more forgiving in the laundry. The listing also suggests buying two covers so one can be washed while the other is in use, which is a practical idea for regular laundry schedules.

Compared with the Utopia options, this cover trades some ruggedness for softness and a cooling-focused feel. The listing does not mention bed bug protection or a specific depth range, so it makes less sense for buyers who need those details confirmed before purchase. It is best suited to people who want a silky, quiet surface and are willing to follow gentle care instructions.

Pros:

• Soft bamboo and polyester blend that feels smooth against the skin
• Marketed as noiseless, with no crinkling when you move
• Zippered design that covers the top and bottom of the mattress
• Stated cooling properties that may appeal to warm sleepers

Cons:

• Care instructions are more demanding, requiring cold washing, low heat, and no bleach

Verdict: This is a good choice if softness and a cooling-focused surface matter more to you than rugged, bed bug-focused protection. Confirm your mattress depth before buying, and be ready to follow gentle laundering habits.

Moonsea Soft Terry Encasement: Best Six-Sided Waterproof Option

This Moonsea encasement is built around a soft terry surface with a zipper that closes around the mattress. Its main selling point is six-sided waterproofing. The listing says the top, the four sides, and the bottom are all waterproof, which is a meaningful step beyond covers that protect only the sleep surface. If your concern is liquid soaking into the mattress core, this full barrier is the feature to focus on.

The terry fabric is stretchable and knitted, so it conforms to the mattress without feeling stiff. Terry has a textured, plush feel that many people find cozy, though it can feel warmer than smooth knit fabrics. The listing also highlights a zipper designed to resist sticking or coming loose when you change the encasement, and it points to strong stitching for long-term use. These are sensible details for a cover that you may need to remove for cleaning more than once.

The main thing to check before buying is depth. The listing describes the fit as 13 to 16 inches in one place and up to 14 inches in another. Because those figures do not fully match, measure your mattress carefully and confirm the fit with the seller before ordering. A cover that is too shallow will feel tight and may stress the zipper, while one that is too deep can bunch up. In everyday use, many owners appreciate the deeper pocket design, but a precise measurement is essential.

Compared with the Utopia and SureGuard options, this cover sits in a middle ground. It offers more complete waterproofing than a top-only protector and a softer surface than many knit covers, though its listed depth details need a closer look. It is a good fit for people who want a plush feel and full liquid protection.

Pros:

• Six-sided waterproof construction covers the top, sides, and bottom
• Soft, stretchable terry surface with a cozy, textured feel
• Zipper and stitching are designed for repeated removal and washing
• Deep-pocket design suits mattresses that are a bit thicker than average

Cons:

• Depth information in the listing is not fully consistent, so measuring before buying is essential

Verdict: This is a solid choice for buyers who want full six-sided liquid protection with a soft terry feel. Measure your mattress first, and if your depth falls within the stated range, it is a dependable option for everyday use.

SureGuard Deep Encasement: Best for Thick Mattresses and Bed Bug Defense

The SureGuard encasement is designed for king mattresses that measure 17 to 20 inches deep, making it the deepest option in this group. Its six-sided construction is described as 100% waterproof, and the listing emphasizes bed bug protection through a fine zipper system with Invisi-Zip and SureSeal technology. For households dealing with bed bug concerns, or buyers with thick pillow-top or hybrid mattresses, this is the cover that addresses those needs most directly.

The top surface is 100% cotton terry, which the listing says wicks moisture while keeping the feel of the mattress. The company also notes that the product is free from vinyl, PVC, phthalates, and fire retardants, and that it carries GREENGUARD Gold certification. Those details appeal to buyers who prefer materials they can read about clearly. The listing also includes a 10-year quality guarantee, which signals the brand’s confidence in long-term durability.

The listing suggests a practical tip: for frequent accidents and easier cleanups, place a fitted SureGuard protector over the encasement. This is a useful idea because it means the encasement stays protected while the top layer takes the daily wear. In practice, that adds a second step to your bedding setup, which may not suit everyone. The cover is also sized specifically for deep mattresses, so a shallower bed will not get the snug fit the product is built for.

Compared with the other choices, this cover is more specialized. It is less suited to standard-depth mattresses but excels where depth and bed bug protection are the priorities. The cotton terry surface is soft and absorbent, though it is a different feel from the smooth knit of the Utopia covers.

Pros:

• Designed for thick mattresses measuring 17 to 20 inches deep
• Bed bug proof zipper system with stated sealing technology
• Cotton terry top that is described as moisture-wicking and noiseless
• Certification and material details suit buyers who want clear information

Cons:

• Only suited to deep mattresses, so a shallower bed will not fit well

Verdict: If you have a thick mattress and want strong bed bug protection with well-documented materials, this is the strongest choice here. Confirm your mattress depth before buying, since the fit is designed for a specific range.

Utopia Bedding 12-Inch Deep Pocket Cover: Best Mid-Depth Balance

This Utopia encasement is sized for a king mattress measuring 78 by 80 inches, with a 12-inch deep pocket. It sits between the shallower and deeper options in this guide, which makes it a sensible choice for the many households with standard-depth mattresses. The zippered closure encloses the mattress for a secure fit, and the listing describes it as waterproof, bed bug proof, and dust mite resistant.

The fabric is a smooth knitted material that the listing describes as breathable, noting that it does not trap heat. The encasement is also described as soft and quiet, which suits light sleepers. Because the surface is knit rather than terry, it tends to feel sleek and lightweight, which some people prefer for a cooler, less padded sleep surface.

Cleaning is straightforward. The listing says the cover can be tossed in the washing machine, which is convenient for regular upkeep. As with any zippered encasement, the main practical challenge is getting the mattress into the cover without strain. The 12-inch depth is generous for most standard mattresses, but it may feel snug on thicker models, so check your measurements before ordering.

Compared with the 15-inch Utopia cover, this model is a better fit for mid-depth mattresses and offers a similar protection profile. Compared with the SureGuard option, it is less suited to very thick beds but more practical for everyday households. It is a balanced choice for buyers who want reliable encasement without stepping up to a specialized deep model.

Pros:

• Sized for standard and mid-depth king mattresses with a 12-inch deep pocket
• Smooth knitted fabric that is described as breathable and quiet
• Zippered closure with stated waterproof, bed bug, and dust mite protection
• Machine washable for convenient upkeep

Cons:

• The 12-inch depth may feel snug on very thick mattresses

Verdict: This is a well-rounded choice for most king mattresses that measure about 12 inches deep. If your mattress is thicker, consider the 15-inch Utopia or the SureGuard cover instead.

How to Choose the Right King Mattress Cover With Zipper

Measure Your Mattress Depth First

Depth is the single most important measurement when shopping for a zippered cover. Measure from the bottom of the mattress to the top, including any pillow-top layers. Most king covers in this guide are sized at 78 by 80 inches, but the depth range varies widely, from around 12 inches to as much as 20 inches. A cover that is too shallow will pull tight, strain the zipper, and wear out faster. A cover that is too deep may bunch and shift during the night. Take the measurement with the mattress on its foundation, and compare it carefully with the listed fit range before you buy.

Decide How Much Protection You Really Need

Zippered covers serve different purposes, so start by identifying your main concern. If you mainly want protection from occasional spills, a waterproof encasement with a smooth top may be enough. If you have children, pets, or a history of frequent accidents, a six-sided waterproof design gives more complete protection. For bed bugs or dust mites, look for a cover that describes a sealed zipper and a fully enclosed design. Be aware that no cover can fix an existing infestation, so use it as preventive protection rather than a cure.

Consider the Fabric and How It Feels

The fabric shapes both comfort and noise. Smooth knitted polyester tends to feel sleek, lightweight, and quiet, which suits people who dislike crinkly materials. Terry fabric feels plush and textured, which many sleepers find cozy, although it can feel warmer. Bamboo blends are often marketed as soft and breathable, though cooling claims should be treated as possible benefits rather than guarantees. Think about how the surface will feel against your skin on a warm night and whether you prefer a firm or padded sensation.

Check the Zipper and Stitching

A zipper is the part of the cover that gets the most stress. Each time you remove the encasement for laundry or a mattress flip, the zipper is tested. Look for listings that describe a sturdy or reinforced zipper and strong stitching. A zipper that sticks, snags, or separates can ruin the cover and make it useless as a barrier. Pay attention to how the zipper wraps the mattress, since a closure that runs around the entire perimeter tends to give the most even coverage.

Plan Your Washing and Drying Routine

A zippered cover needs regular cleaning, so think about how you will wash it before you buy. Some options are described as machine washable and dryable on low heat, which fits most household routines. Others call for cold, gentle cycles, no bleach, and no dry cleaning, which takes more planning. If you plan to wash the cover often, choose one with simple care instructions, or consider owning two covers so you always have a clean one ready. Following the care label also helps preserve the waterproof layer over time.

Think About Installation and Fit

Getting a fully encased mattress into a zippered cover can take time, especially on a thick or heavy mattress. A stretchy fabric makes the job easier because it lets you pull the cover over the corners without tearing. Take your time, work from one corner, and keep the zipper path clear. Once the cover is on, check that it sits flat without bunching at the corners. A snug, smooth fit makes the cover more comfortable and reduces wear on the seams.

Frequently Asked Questions

What size do I need for a king mattress cover with zipper?

Most king zippered covers are designed for a mattress measuring about 78 by 80 inches. The more important factor is depth, which varies by product. Measure your mattress height and compare it with the listed depth range before ordering.

How do I measure my mattress depth correctly?

Measure from the bottom edge of the mattress to the top, including any pillow-top or quilted layers. Use a flexible tape and measure at the center of the mattress for the most accurate reading. If your mattress is uneven or has a thick top, measure at a few points and use the highest reading.

Will a zippered cover stop bed bugs completely?

A zippered cover that is fully sealed can help block bed bugs from reaching the mattress and can make it easier to spot pests. However, it does not eliminate an existing infestation, and no cover can guarantee complete protection. If you have bed bugs, work with a pest control professional and use encasements as one part of a broader plan.

Are zippered mattress covers noisy when you move?

Noise depends mainly on the fabric. Smooth knitted and bamboo-blend surfaces are often described as quiet, while some plastic-based or laminated covers can crinkle. Several options in this guide emphasize a non-crinkling or noiseless design, which suits light sleepers.

Can a zippered cover make my bed feel hot?

Any waterproof layer can affect airflow, so breathability matters. Knit fabrics and bamboo blends are often described as breathable, while terry can feel warmer. If heat is a concern, choose a surface that is marketed as breathable and pair it with breathable bedding.

How often should I wash a zippered mattress cover?

Wash the cover regularly, especially if you use it to guard against spills, sweat, or pets. Follow the care label for water temperature and drying, since waterproof layers can be damaged by harsh heat or bleach. Washing on a gentle cycle and drying on low helps the cover last longer.

Final Recommendation

For most buyers, the Utopia Bedding 15-inch zippered encasement is the most dependable all-around choice. It offers full 360-degree coverage, a quiet knitted surface, and a stated waterproof barrier, and it suits a wide range of standard and moderately deep mattresses. If your mattress is closer to 12 inches deep, the Utopia 12-inch deep pocket model is a balanced alternative with a similar feel and protection profile.

If you have a thick mattress and bed bug protection is a priority, the SureGuard encasement is the strongest option in this group, with clear material details and a sealed zipper system. If softness is your top concern, the bamboo blend cover offers a silky feel and cooling-focused design, provided you are comfortable with its gentler care routine. Measure your mattress carefully before you buy, and choose the cover whose depth, protection, and fabric match your sleep needs.